I got the M11. So far, my initial impressions are positive. I'll post more after I've burned them in a bit more, and given them some listening time.

I just have one question. Does anyone know how to remove the included clip, which came attached to the wire? I am just asking because I'm afraid of tugging it off too hard and damaging the wire itself.

I got the M11. So far, my initial impressions are positive. I'll post more after I've burned them in a bit more, and given them some listening time.

I just have one question. Does anyone know how to remove the included clip, which came attached to the wire? I am just asking because I'm afraid of tugging it off too hard and damaging the wire itself.

I just tugged on it really hard and didn't damage the wire . Be slow but forceful. It's the same exact clip used by Nuforce/Soundmagic/Head-Direct.

I'll want some more time. But I can give some initial comparisons. The most obvious difference is the level of warmth. To my ears at least, the Klipsch S4 had an overwhelming amount of bass, and were simply far too warm/dark. The sound seemed "thick" and "heavy" and the highs didn't have enough sparkle for me.

The M11 don't suffer in this regard. They are actually a bright dynamic. The sound is more "analytical", but only in comparison to the warm S4. I still find them to be quite euphonic/musical...certainly more than the PL50s for instance. They are, however, not bass shy. It's certainly there, and has fairly impressive punch, it just doesn't unduly colour the sound. Mids are clear, and I think a little forward, which I also prefer. Also, so far, I haven't heard any sibilance. Soundstage could be better, but you can't have everything. The only thing that is weird is that despite the sound stage being average, maybe even a bit below, they are slightly distant rather than in your face like Grados. Still, burn-in might change that. They have cooked for less than 10 hours thus far.

Comfort, though, is great. And I say this coming from having tried the S4, and owning the pl50. These are better than both, at least to my ears. Overall, I'm quite happy with the purchase.

I bought the M6 and M9 and enjoy both very much but I am slightly more partial to the former because I actually like the over-the-ear fit. It only took a little effort to get the mem wire the way I like and it's very quick to get them on and off. I thought there may have been an issue with my M6s initially but it turned out the tri-flanged tips were too small for my ears and I wasn't getting a good enough seal so the bass suffered. I switched them out and use the same tips now as on the M9s. These are both unbelievable headphones for the money. I get pulled into the mix and I can wear them for hours without fatigue.